Yeoman EXE MIDI PR1145 - Manual (Page 18)

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3.3 The pilot unit can now be removed by undoing the two
screws (see Diagram 6).
AR1445
6
3.4 Reassemble in reverse order, do not overtighten.
NOTE: SPECIAL CARE SHOULD BE TAkEN WHEN
REPLACING THE THERMOCOUPLE TO THE BACk OF
THE GAS VALVE TO ENSURE THAT THE SENSOR WIRES
FOR THE GAzCO FLUE SURE SYSTEM ARE NOT
DISCONNECTED.
4. IGNITION LEAD AND PIEzO
4.1 Gain access to the back of the pilot assembly (see Section 2)
and disconnect the ignition lead from the electrode.
4.2 Remove the front cover from the control valve (see
Diagrams 7 and 8) and disconnect the other end of the
ignition lead from the valve body. Note the existing route of
the ignition lead.
7
AR0915
8
AR0916
4.3 Replace with a new ignition lead following the same route
as the old one. Replace the valve cover and the pilot
assembly.
4.4 Check operation of the new ignition lead.
5. PIEzO
The piezo assembly used on this appliance is not
serviceable and is unlikely to fail.
6. GAS VALVE
6.1 Turn the gas supply off at the isolation device.
6.2 Disconnect the 2 x 8mm and 1 x 4mm gas pipe fittings at
the back of the gas valve (see Diagram 9, A) and disconnect
the thermocouple (see Diagram 9, B).
9
AR0943
A
C
C
B
SERVICING INSTRUCTIONS
REPLACING PARTS